package com.leadnews.wemedia.service.impl;

import com.alibaba.fastjson.JSONArray;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.leadnews.apis.article.IArticleClient;
import com.leadnews.common.aliyun.GreenImageScan;
import com.leadnews.common.aliyun.GreenTextScan;
import com.leadnews.common.tess4j.Tess4jClient;
import com.leadnews.file.service.FileStorageService;
import com.leadnews.model.article.dtos.ArticleDto;
import com.leadnews.model.common.dtos.ResponseResult;
import com.leadnews.model.wemedia.pojos.WmChannel;
import com.leadnews.model.wemedia.pojos.WmNews;
import com.leadnews.model.wemedia.pojos.WmSensitive;
import com.leadnews.model.wemedia.pojos.WmUser;
import com.leadnews.utils.common.SensitiveWordUtil;
import com.leadnews.wemedia.mapper.WmChannelMapper;
import com.leadnews.wemedia.mapper.WmNewsMapper;
import com.leadnews.wemedia.mapper.WmSensitiveMapper;
import com.leadnews.wemedia.mapper.WmUserMapper;
import com.leadnews.wemedia.service.WmNewsAutoScanService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.util.*;
import java.util.stream.Collectors;

@Service
@Slf4j
@Transactional
public class WmNewsAutoScanServiceImp implements WmNewsAutoScanService {
    @Autowired
    private WmNewsMapper wmNewsMapper;

    @Autowired
    private IArticleClient articleClient;

    @Autowired
    private WmChannelMapper wmChannelMapper;

    @Autowired
    private WmUserMapper wmUserMapper;

    @Autowired
    private WmSensitiveMapper wmSensitiveMapper;
    @Autowired
    private FileStorageService fileStorageService;

    @Autowired
    private GreenImageScan greenImageScan;

    @Autowired
    private Tess4jClient tess4jClient;
    @Autowired
    private GreenTextScan greenTextScan;


    @Override
    @Async
    public void autoScanWmNews(Long id) {
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
        //1、查询自媒体文章
        WmNews wmNews = wmNewsMapper.selectById(id);
        if (wmNews ==null){
            throw new RuntimeException("文章不存在");
        }

        //2、审核文本、图片
        if(wmNews.getStatus().equals(WmNews.Status.SUBMIT.getCode()) ){
            //提取图片和内容
//            Map<String, Object> textAndImages = handleTextAndImages(wmNews);
//            //自管理的敏感词过滤
//            boolean isSensitive = handleSensitiveScan((String) textAndImages.get("content"), wmNews);
//            if (!isSensitive) return;
//
//
//            //2.审核文本内容  阿里云接口
//            boolean isTextScan = handleTextScan((String) textAndImages.get("content"), wmNews);
//            if (!isTextScan) return;
//
//            //3.审核图片  阿里云接口
//            boolean isImageScan = handleImageScan((List<String>) textAndImages.get("images"), wmNews);
//            if (!isImageScan) return;

            //4.审核成功，保存app端的相关的文章数据
            ResponseResult responseResult = saveAppArticle(wmNews);

            if (!responseResult.getCode().equals(200)) {
                throw new RuntimeException("WmNewsAutoScanServiceImpl-文章审核，保存app端相关文章数据失败");
            }
            //回填article_id
            wmNews.setArticleId((Long) responseResult.getData());
            updateWmNews(wmNews, (short) 9, "审核成功");

        }

    }



    /**
     * 保存app端相关的文章数据
     *
     * @param wmNews
     */
    private ResponseResult saveAppArticle(WmNews wmNews) {

        ArticleDto dto = new ArticleDto();
        //属性的拷贝
        BeanUtils.copyProperties(wmNews, dto);
        //文章的布局
        dto.setLayout(wmNews.getType());
        //频道
        WmChannel wmChannel = wmChannelMapper.selectById(wmNews.getChannelId());
        if (wmChannel != null) {
            dto.setChannelName(wmChannel.getName());
        }

        //作者
        dto.setAuthorId(wmNews.getUserId().longValue());
        WmUser wmUser = wmUserMapper.selectById(wmNews.getUserId());
        if (wmUser != null) {
            dto.setAuthorName(wmUser.getName());
        }

        //设置文章id
        if (wmNews.getArticleId() != null) {
            dto.setId(wmNews.getArticleId());
        }
        dto.setCreatedTime(new Date());

        ResponseResult responseResult = articleClient.saveArticle(dto);

        return responseResult;

    }


    /**
     * 自管理的敏感词审核
     *
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleSensitiveScan(String content, WmNews wmNews) {

        boolean flag = true;

        //获取所有的敏感词
        List<WmSensitive> wmSensitives = wmSensitiveMapper.selectList(Wrappers.<WmSensitive>lambdaQuery().select(WmSensitive::getSensitives));
        List<String> sensitiveList = wmSensitives.stream().map(WmSensitive::getSensitives).collect(Collectors.toList());

        //初始化敏感词库
        SensitiveWordUtil.initMap(sensitiveList);

        //查看文章中是否包含敏感词
        Map<String, Integer> map = SensitiveWordUtil.matchWords(content);
        if (map.size() > 0) {
            updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容" + map);
            flag = false;
        }

        return flag;
    }



    /**
     * 审核图片
     *
     * @param images
     * @param wmNews
     * @return
     */
    private boolean handleImageScan(List<String> images, WmNews wmNews) {

        boolean flag = true;

        if (images == null || images.size() == 0) {
            return flag;
        }

        //下载图片 minIO
        //图片去重
        images = images.stream().distinct().collect(Collectors.toList());

        List<byte[]> imageList = new ArrayList<>();

        try {
            for (String image : images) {
                byte[] bytes = fileStorageService.downLoadFile(image);

                //byte[] 转换为bufferedImage
                ByteArrayInputStream in = new ByteArrayInputStream(bytes);
                BufferedImage bufferedImage = ImageIO.read(in);

                //图片识别
                String result = tess4jClient.doOCR(bufferedImage);
                //过滤文字
                boolean isSensitive = handleSensitiveScan(result, wmNews);
                if(!isSensitive){
                    return isSensitive;
                }
                imageList.add(bytes);

            }
        }catch (Exception e){
            e.printStackTrace();
        }




        //审核图片
        try {
            Map map = greenImageScan.imageScan(imageList);
            if (map != null) {
                //审核失败
                if (map.get("suggestion").equals("block")) {
                    flag = false;
                    updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容");
                }

                //不确定信息  需要人工审核
                if (map.get("suggestion").equals("review")) {
                    flag = false;
                    updateWmNews(wmNews, (short) 3, "当前文章中存在不确定内容");
                }
            }

        } catch (Exception e) {
            flag = false;
            e.printStackTrace();
        }
        return flag;
    }

    /**
     * 审核纯文本内容
     *
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleTextScan(String content, WmNews wmNews) {

        boolean flag = true;

        if ((wmNews.getTitle() + "-" + content).length() == 0) {
            return flag;
        }
        try {
            Map map = greenTextScan.greeTextScan((wmNews.getTitle() + "-" + content));
            if (map != null) {
                //审核失败
                if (map.get("suggestion").equals("block")) {
                    flag = false;
                    updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容");
                }

                //不确定信息  需要人工审核
                if (map.get("suggestion").equals("review")) {
                    flag = false;
                    updateWmNews(wmNews, (short) 3, "当前文章中存在不确定内容");
                }
            }
        } catch (Exception e) {
            flag = false;
            e.printStackTrace();
        }

        return flag;

    }
    /**
     * 修改文章内容
     *
     * @param wmNews
     * @param status
     * @param reason
     */
    private void updateWmNews(WmNews wmNews, short status, String reason) {
        wmNews.setStatus(status);
        wmNews.setReason(reason);
        wmNewsMapper.updateById(wmNews);
    }


    /**
     * 1、从自媒体文章的内容中提取文本和图片
     * 2、提取文章的封面图片
     * @param wmNews
     * @return
     */
    private Map<String,Object> handleTextAndImages(WmNews wmNews) {
        //存储文本内容
        StringBuilder stringBuilder = new StringBuilder();
        List<String> images =new ArrayList<>();

        //1、从自媒体文字的内容中提取文本和图片
        if (StringUtils.isNotBlank(wmNews.getContent())){
            List<Map> maps = JSONArray.parseArray(wmNews.getContent(),Map.class);
            for (Map map : maps){
                if (map.get("type").equals("text")){
                    stringBuilder.append(map.get("value"));
                }
                if (map.get("type").equals("image")){
                    stringBuilder.append(map.get("value"));
                }
            }
        }
        //2、提取文字的封面
        if (StringUtils.isNotBlank(wmNews.getContent())){
            String[] split = wmNews.getImages().split(",");
            images.addAll(Arrays.asList(split));
        }

        Map<String,Object> resultMap = new HashMap<>();
        resultMap.put("content",stringBuilder.toString());
        resultMap.put("images",images);
        return resultMap;
    }
}
